Wood-heel-turning machine



l W. W. BRADBURY woon HEEL TURNING MACHINE Mgrch 6, 1928. 1,661,320

Patented Mar. 6, 1928.

. UNITED STATES PATENT oFFic1i:.-

WALTER. w. mummy, orfs'r. Louis,y MISSOURI, Assrcmon` 'ro `unrrnn suonMA- `ci-surnam? conrom'rron, or rArEnsoN, NEW JERSEY, A conronnrrou orNEW JERSEY.

woonnnnmrunnrne MACHINE. j

' Application Bled Hay 28,

i "This invention relates to heel turning maf chines and' is illustratedas embodied in a' wood heel turning machine of the type dis# closed inUnited StatesLetters Patent No.

I 1,580g184, issued April 13, 1926', on the applij i cation of John H.Vinton.

Machines ofthe type mentioned are provided with a jack for holding awood heel blank and swinging it past a rotarycutter( -l The jackcomprises a base plateon which I0 mountedfin the end of a clampinglever.

An object of the present invention is to provide improved clamping`mechanism adopted for use in an organization of the type referred to,which mechanism will be $5 smootherand more `definite in its operation.Ihave accomplished this by providing a defi-j nite Seat in the clampinmember for engagement with theend 0% the screw, and n ivotal mountingfor the screw which, as: I0 illustrated', enables the Screw .end toengage the seat properly irrespective of the adjustment or oftheswinging movement 0i the clamping member. Preferably several seats areprovided to` allow suitable engagement Il without undue ivotal `actionof the screw.

Theseand ot er features lofthe inventionY comprising certaincombinations and arrangements of parts `will be apparent from thefollowin description of a preferred em 60 bodiment o the `inventionshown inv the drawings, in which Fig.`l is a side elevation ofthe frontpart of the maohine;`andf Fig. 2 is a. sectional detail showing thetrunnioned screw.

In the drawing only so much 'of the machine vis Shown as isnecessary-for the understanding ofthe present invention, and

reference may be madeto Letters Patent No.

1,580,184, for further Villustration and description of the constructionand operation of parts not Vfully disclosed herein.

The frame 10 ofthe illustrated wood heel turning machine has a verticalVcutter shaft 1927. Serial No. 195,117.

12 with a `formed cutter head 14. The frame also carries a shaft 16,parallel to the cutter shaft, on which is mounted a swinging bracket orcrane 18 carrying a pivoted shaft 201in itsA outer end. rllhis shaft ismoved vertically by the engagement of an arm 22 on frameBO, having abase plate` 32 arrangedto engage the heel-seat portion of awoodheelblank, a Vbreast gage 34, and a topli'ft v'portion clampingmember36.1Themember 36 'is mounted ona horizontally adjustable pivotv 38nhaving the considerable range of :adjustment necessary to enable itsend to overlap and engage properly with the. toplift endof anytype ofheel blank 39.`

A clamping member' 40 is pivotally m0ui1ted at 42 .on the jack frame 30;This member 40 has a screw y44 mounted in its end, over the clampingmember 36. When the heel blank is clamped the member 40 is forced to theposition shown in Fig. lby mechanism to bedescribed, and variations inthe thickness of the Work are accommodated by adjustment of thescrewl upand: down in-the end of the member 40, so'thatany thickness of'blank-canbegclamped with the member40 in substantially thek same position. Themember 36' isnormally held `up against the screw44 by a spring 45. y

In accordanceuwith a feature of the present invention the upper surfaceof lthe member 36 is provided with a-'number of. seats 48,

formed as holesor drill/spots', arrangedv along the length of the member36, so that any longitudinaladjustment will bringone of these Seatsnearly under the screw 44. The screw 44 is threaded into atrunnion piece50, which is horizont-ally pivoted in the member 40'and the other in themiddle part of a lever 56 terminally pivoted at 58 on the member 40 andhaving a cam roll 60 at its other end engaging a cam 62 on a cam lever64 pivoted at 66 on the jack frame 30.

In the drawing the jack is shown in blank-clamping position. To releasethe blank the operator will raise the handle 68 causing the cam 62 torun from under the roll 60. This will release the members 56. 40completely so that they can swing around the pivot 42 releasing themember 36, when the blank can be removed and a new one inserted. Themembers 36, 40, the pivots 88, 42, 50 and the depression 48 constitute alinkage which changes its form as the member 36 is forced down on theheel blank 39. The pivot at 50 prevents any tendency of the end of thescrew 44 to scrape over the top of the member 36 as this change inl formtakes place and avoids any danger of breaking or damaging the screw orthe member 36. The jack as a whole is tilted `around the pivot 28 by theadjustable socalled upper track 70. as will be well understood by thosefamiliar with the art.

The mechanism for compensating for minor variations in work thickness,exemplified by the resilient compound lever 40, 56, is the invention ofNorton W. Kinney and is not claimed herein.

Having described my invention, what I claim as new and desire to secureby Letters Patent of the United States is:

1. In a wood heel turning machine, a jack having a clamping facearranged to receive the heel-seat surface of a heel blank, a clampingmember arranged to engage the toplift surface of the blank, a secondclamping member arranged to force the first-named clamping member towardthe clamping face, and a screw trunnioned in the second clamping memberand engaging the first-named clamping member.

2. In a wood heel turning machine, a jack having a clamping facearranged to' receive the heel-seat surface of a heel blank, a pivotallymounted clamping member arranged to engage the toplift surface of theblank. a pivotally mounted second clamping member arranged to force thefirst-- named clamping member toward the clamping face, and a screw inthe second clamping member and engaging the first-named clamping member,said screw being trunnioned in the second clamping member to take up therelative movement between the two said clamping members on their pivots.

3. In a wood heel turning machine, a jack having a clamping facearranged to receive the heel-seat surface of a heel blank, a clampingmember arranged to engage the toplift surface of the blank, saidclamping member being adjustable longitudinally of the heel blank, aclamping lever arranged to force the clamping member toward the clampingface, and a screw trunnioned in the clamping lever and engaging theclamping member.

4. In a wood heel turning machine, a jack having a clamping facearranged to receive the heel-seat surface of a heel blank, a pivotallymounted clamping member arranged to engage the toplift surface of theblank, said clamping member being adjustable longitudinally of the heelblank, a clamping lever arranged to force the clamping member toward theclamping face, a screw trun nioned in the clamping lever and engagingthe clamping member. and means for operating the clamping lever.

5. In a wood heel turning machine, a jack having a clamping facearranged to receive the heel-seat surface of a heel blank, a clampingmember arranged to engage the toplift surface of the blank, a clampinglever arranged to force the clamping member toward the clamping face, athreaded nut trunnioned in the clamping lever, and a screw in the nutengaging the clamping member. said clamping member having a hole in itssurface to receive the end ofthe screw.

6. In a wood heel turning machine. a jack having a clamping facearranged to receive the heel-seat surface of a heel blank, a pivotallymounted clamping member arranged to engage the toplift Surface of theblank, a clamping lever arranged to force the clamping member toward theclamping face, a screw trunnioned in the clamping lever and engaging theclamping member. said second-named clamping member having a seat in itssurface to receive the end of the screw, a earn roll on the clampinglever. and a earn lever arranged to co-onerate with the roll to move theclamping lever.

7. In a Wood heel turning machine. a jack having a clamping facearranged to receive the heel-seat surface of a heel blank. a clampingmember arranged to engage the top-lift surface of the blank. saidclamping member being adjustable longitudinally of the heel blank, aclamping lever arranged to force the clamping member toward the clampingface, and a screw trunnioned on a horizontal axis in the clamping leverand engaging the clamping mem ber. Said clamping member having a plurality of seats in its surface so arranged that one of them will receivethe end of the screw. in any adjustment of the clamping 12 member. byvirtue of the trunnion mount ing of the screw.

8. In a wood heel turning machine, a jack having a clamping facearranged to receive the heel-seat surface of a heel blank, a pivotallymounted clamping member arranged to engage the toplift surface of theblank, said clamping member being adjustable longitudinally of the heelblank, a clamping lever arranged to force the clamping 1,061,324.)y Y gmember toward the clamping face, and a selected to receive the end ofthey screw,

`screw trunnioned in the clamping lever on Without undue rotation of thescrewin its an axis perpendicular to the longitudinal trunnion bearing.10 axis of the heel blank and engaging the r In testimony whereof I havesigned my clamping member, said secondmamed name to this specification.

clamping member having a plurality of seats in its surface one of whichmay be VALTER W. BRAVDBURY.` i*

